History of the Playfair Cipher | Hankering for History

given a 5x5 matrix for playfair cipher a how many possible keys does the playfair cipher have ignore the fact that some keys might produce identical encryption results express your answer as 00792

Playfair Cipher in network security | Playfair cipher example | playfair cipher encryption example | playfair cipher in cryptography

The ciphertext: BP EG FC AI MA MG PO KB HU was encrypted using the Playfair cipher with keyword Archimedes. Find the plaintext.

Playfair ciphers - SlideServe